Spinning frame



1,619,985 March 8 1927 c. MQRTON SPINNING FRAME Filed May 11, 1926 2sheetssheet 1 (jg Y 9 YfiWM ATTORNEYS.

1 2 March 9 7 c. MORTON SPINNING FRAME Filed May 11, 1926 2SheetS-SheetZ I N V EN TOR. 5%ar/a9 1 V aria/z.

M v ATTORNEYS.

Patented Mar. 8, 1927.

PATENT oFFIcEl.

CHARLES MORTON, 0F IPA'WTUCKE'I, RHODE ISLAND.

SPINNING FRAME.

Application filed May 11, 1926. Serial No. 108,262.

This invention relates to improvements in spinning frames; and has forits object to provide means whereby the draft rolls of relatively smalldiameters may be employed and set closel together to materially reducethe distance etween the centers or nips of the back and front rolls, andalso to provide a practical means for driving rolls set so closelytogether that an increased draft on the roving may be obtained and arelatively coarse roving drawn down to a relatively fine yarn and at thesame time produce a yarn product of uniform size and quality.

With'these and other objects in view the invention consists of certainnovel features of construction, as will be more'fully described, andparticularly pointed out in the appended claims:

In the accompanying drawings:

Figure 1 is a top view showing a set of driving rolls and an improvedmeans for driving the same.

Figure 2 is a view from the rear showing an arrangement of driving gearsincludin the cross or drive shaft which transmits the power from one endof the back roll across the machine to drive the intermediate roll fromits opposite end.

Figure 3 is an end View showing one arrangement of gearing whereby theintermediate shaft is driven from its end opposite the head end of themachine through the cross shaft.

Figure 4 is a diagrammatic view showing the general arrangement ofdriving mechanism.

It has heretofore been found in the operation of spinning frames of thischaracter, necessary to set the draft rolls relatively wide apart inorder to be ableto mount driving gears on the ends thereof of sufiicientsize and strength to operate the roll in a practical way, and by thisconstruction the distance between the centers or nips of the back andfront rolls must necessarily be so far apart as to materially limit theamount of draft that could be made in the roving, thereby necessitatingthe use of relatively fine hanks of roving to prevent the same frombreaking down during the drawing operation, which would form thick andthiniplaces in the yarn and so produce a'yarn that is ununiform andunsatisfactory.

rangement of mechanism which permits the use of draft rolls of smallerdiameters than could heretofore be used and permits these rolls to berun very closely together and so reduce the distance between the nips orcenters thereof to the very minimum. By this construction, I ampermitted to emplo a greatly increased draft between the bacg and frontrolls and consequently I am enabled to use a relatively coarse hankroving. The intermediate roll I employ only as a support for the rovingduring the drawing action which prevents the roving from breakmg downduring the drawing operation, thereby permitting a fine yarn of auniform size and quality to be obtained from the coarser roving and soby eliminating the use of a finer hank roving I reduce the cost ofpreparing this fine roving, which reduction g in some cases reaches ashigh as twenty percent; and the following is a detailed description ofthe present embodiment of my invention and showing one arrangement ofmechanism by which these advantageous results may be obtained.

l/Vith reference to the drawings, 10 designates the bottom front roll,11 the intermediate roll and 12 the back roll of the dif ferent sets ofdraft rolls, the relative positions of which are best illustrated in.Figure 3. Upper rolls 13, 14. and 15 are arranged to cooperate in theusual Way with these lower rolls to form nipping points between eachpair for the roving. All these sets of rolls are mounted in the usualway in the frames 16.

My improved set of rolls is of smaller diameter than those usuallyemployed in spinning machines of this character and are set closertogether than is usual for such draft rolls and in order to be able togear these lower rolls together to run in the required time with eachother, I employ the usual main drive gear 17 on the front roll 10 at thehead end of the machine, the end of this roll shaft is run in thebearing 18 and is provided with a pinion 19, which pinion serves todrive the back roll 12 through a train of gears which includes the la re gear 20, pinion 21 and the gear 22 on tie end of the back roll 12.

()wing to the factthat these rolls are set so closely together, it isfound impossible to drive the intermediate roll from the head end of themachine and at the same time obtain sufficient size and strength inthese gears to drive the rolls in a practical way. There fore, in orderto drive this intermediate roll 11, which in some cases may be drivenapproximatel 10% faster than the roll 12, I have provi ed an independentcross shaft 23 which is connected at the head end of the machine to theback roll through gears 24 and 25. This cross shaft extends along theback of the machine and is connected at its opposite end through gears26 and 27 to the intermediate shaft 11.

When it is desired to change the speed of the back roll relative to thefront roll, it is only necessar to change the pinion 21 which can bedone by adjusting the bracket 28 on its bearing 18 to cause this pinionto again properly mesh with gear'22 on the back roll, and it will beseen by this arrangement that any relative change in speed of the backroll will also make a corresponding change of speed in the intermediateroll 11.

In mountin this cross shaft 23, I preferably suspend a pair of bearings29 by arms 30 from the ears 31 on the stands 32. By this constructionand arrangement of gearing it is obvious that I may reduce the distancebetween the nips of the front and back rolls 10 and 12 to the veryminimum and use the middle rolls as a carrier only. In other words, byhaving the rolls widely spaced, a relatively fine hank roving must beemployed to produce a yarn of a given size and quality, but by reducingthe space between the nips of the rolls, a greater draft may be employedand I am enabled to produce the same uality and size of yarn from a muchcoarser ank roving thus eliminating one distinct step in operation whichhas heretofore been necessary to reduce the roving from the coarsehank-to the fine hank size in order to obtain a satisfactory even yarn,by which arrangement I obtain a mate rial saving in the cost of yarnproduction which in some cases figures as high as twenty percent.

The foregoing description is directed solely towards the constructionillustrated, but I desire it to be understood that I reserve theprivilege of resorting to all the mechanical changes to which the deviceis susceptible, the invention being defined and limited only by theterms of the appended claims.

I claim:

1. In a spinning frame front and back sets of draft rolls, means fordriving said sets at different relative speeds, a set of intermediaterolls between said sets of back and front rolls and positioned withtheir working surfaces to run just clear of those of said back and frontsets of rolls, the distance between the centers of said adjacent sets ofrolls being insufficient to permit of two adjacent sets of rolls beingdriven directly one from the other, and means for driving saidintermediate set indirectly from those of another set.

2. In a spinning frame front and back sets of draft rolls, means fordriving said sets at different relative speeds, a set of intermediaterolls spaced substantially equally distant between said back and frontrolls, said sets of rolls being so positioned-relative to each otherthat their Working surfaces run just clear of each other the distancebetween the centers of said adjacent sets of rolls being insufiicient topermit of two adjacent sets of rolls being driven directly one from theother, and means for driving said intermediate set at a speed greaterthan that of said back set of rolls indirectly from those of anotherset.

3. In a spinning frame, a group of draft rolls comprising a pair offront, back and intermediate rolls arranged in closely spaced relation,gears for driving said back roll and front rolls at different relativespeeds, and

a shaft driven to run at a fixed rate of speeds relative to said backrolls and through which one of said pairs of intermediate rolls isdriven from the end opposite the drive end of the said back and frontrolls.

4. In a spinning frame, a group of draft rolls comprising pairs offront, back and intermediate rolls arranged in closely spaced relation,gears for driving said front and back rolls one from the other at oneend thereof to obtain the desired draft between them, and a cross shaftgeared to be driven from the same end as said front and back rolls torun at a given relative rate of speed and said shaft being geared todrive one of said intermediate rolls from the opposite end thereof.

5. In a spinning frame, a group of draft rolls comprising pairs offront, back and intermediate rolls arranged in closely spaced relation,gears for driving said front and back rolls at predetermined speeds, ashaft driven in time with the back roll gears for transmitting motionfrom said shaft to said intermediate rolls, and means whereby the gearratio between the front and back rolls may be readily changed to varythe, amount of draft between them.

6. In a spinning frame, a group of draft rolls comprising pairs of rollstands, front, back and intermediate rolls journaled in said stands, atrain of gears including change gears for driving said back and frontrolls in time with each other, a cross shaft also journaled in saidstands, one end of said shaft being geared to the driven end of thebackroll and eared adjacent its opposite end to drive said intermediaterolls.

7. In a spinning frame, a group of draft rolls comprising a pair offront, back and intermediate rolls arranged in closely spaced relation,gears for driving said front and back rolls one from the'other at oneend thereof to obtain the desired draft between them, a shaft extendinglengthwise of the frame, means for driving said shaft from the head endthereof, and means for transmitting power through said shaft to theopposite end of the intermediate r011.

In testimony whereof I affix my signature.

CHARLES MORTON.

